Seismic Scattering Property Changes Correlate With Ground Deformation at Suwanosejima Volcano, Japan

Seismic Scattering Property Changes Correlate With Ground Deformation at Suwanosejima Volcano, Japan
复制标题

日本诹访之濑岛火山的地震散射特性变化与地面变形相关

DOI:
10.1029/2022jb024352
复制
发表时间:
2022
期刊:
Journal of Geophysical Research: Solid Earth
影响因子:
--
通讯作者:
Fujita Eisuke
Fujita Eisuke
中科院分区:
--
文献类型:
--
作者:
Hirose Takashi;Ueda Hideki;Fujita Eisuke

文献摘要

参考文献

相似文献

利用地震背景噪声通过被动干涉测量法连续估计地震速度和地震散射特性的变化是监测火山的一种有前途的工具。为了提高该方法的有效性,不仅需要检测地下结构的变化,而且还需要将地震波速度和地震波散射特性的估计变化与其他观测(如地面变形)进行定量比较。我们将被动干涉测量应用于2017年4月至2021年12月期间记录的日本Suwanosejima火山的连续地震记录。我们在地震环境噪声互相关函数(CCF)中检测到重复的显著波形去相关,这表明火山浅层地区地震散射特性的变化。在爆炸次数增加前2周至几天观察到这些去相关,表明地震散射特性在此期间发生了显著变化。我们发现,在地震环境噪声CCF和倾斜的变化相关的岩浆积累和注入下Suwanosejima的去相关的时间很好地同步。在岩浆聚集期间,去相关量与倾斜变化之间的高度相关性可能表明,大量的岩浆聚集导致散射性质的巨大变化。这些结果提供了一个重要的第一步,定量比较的散射性能的变化量与火山下的岩浆积累量。
Continuous estimation of changes in seismic velocity and seismic scattering property by passive interferometry using seismic ambient noise is a promising tool for monitoring volcanoes. To improve the usefulness of this method, it is necessary not only to detect subsurface structural changes but also to quantitatively compare the estimated changes in seismic wave velocity and seismic wave scattering property with other observations, such as ground deformation. We applied passive interferometry to continuous seismic records from the Suwanosejima volcano, Japan, recorded between April 2017 and December 2021. We detected repeated significant waveform decorrelations in seismic ambient noise cross‐correlation functions (CCFs), indicating changes in seismic scattering property in the shallow areas of the volcano. These decorrelations were observed from 2 weeks to a few days before the increase in the number of explosions, suggesting that seismic scattering properties changed significantly during that period. We found that the timing of the decorrelation in seismic ambient noise CCFs and tilt changes related to magma accumulation and injection beneath Suwanosejima were well synchronized. The high correlation between the amounts of decorrelation and the tilt change during the magma accumulation period possibly suggests that a large volume of accumulated magma caused great changes in the scattering property. These results provide a significant first step toward a quantitative comparison of the amount of changes in the scattering property with the amount of magma accumulation beneath volcanoes.
DOI: 10.1002/2013jb010399
发表时间: 2013-12
期刊: Journal of Geophysical Research: Solid Earth
影响因子: --
作者:
A. Obermann;T. Planès;É. Larose;Michel Campillo
通讯作者: A. Obermann;T. Planès;É. Larose;Michel Campillo
通过基于网络的分析确定克柳切夫火山群(堪察加半岛)下方地震火山震源的深度迁移
DOI: 10.1029/2019gl083465
发表时间: 2019
影响因子: 5.2
作者:
J. Soubestre;L. Seydoux;N. Shapiro;J. Rosny;D. Droznin;S. Droznina;S. Senyukov;E. Gordeev
通讯作者: E. Gordeev
探测和定位 2011 年加那利群岛埃尔耶罗潜艇爆发期间的前兆信号
DOI: --
发表时间: 2018
影响因子: 5.2
作者:
P. Sánchez‐Pastor;A. Obermann;M. Schimmel
通讯作者: M. Schimmel
通过对地震阵列记录的数据进行协方差矩阵分析来检测地震活动
DOI: 10.1093/gji/ggv531
发表时间: 2014
影响因子: 2.8
作者:
L. Seydoux;N. Shapiro;J. Rosny;F. Brenguier;M. Landès
通讯作者: M. Landès
DOI: --
发表时间: 2022
期刊:
影响因子: --
作者:
Sakane Fumio;Hoshino Fumi;Murakami Chiaki;植松 祐真
通讯作者: 植松 祐真